How do you cook barber fish?

"Barber fish" is not a recognized fish species. It's possible you're thinking of a different type of fish, or the name might be a regional or local term.

To help me give you the best cooking advice, could you please tell me:

* What does the fish look like? Can you describe its appearance, color, size, and any distinctive features?

* Where did you get the fish? Was it from a local market, a specific region, or a specific fishmonger?

* Do you have any other information about the fish? For example, is it a saltwater or freshwater fish?

Once I have more information, I can give you specific advice on how to cook it.